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2001 C70 Convertible 2.4 liter low growling noise

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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jblackburn
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Year and Model: 1998 S70 T5
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Re: 2001 C70 Convertible 2.4 liter low growling noise

Post by jblackburn »

abscate wrote:This forum covers the C70 through 2004

Welcome!!!!
Which essentially remained unchanged from 2000 S/V70's for the most part.

OP, your top mount looks fine from here. Go after the "front" (lower) mount by the crank pulley first and see what that does for you.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

janders99
Posts: 11
Joined: 10 October 2013
Year and Model: 2008 XC70
Location: North Carolina, USA

Post by janders99 »

Thanks everyone. I have decided to only replace the side mount today. Top one looks OK. I have very high hopes for reduction in vibration from this. I will post again in a couple of hours how it goes.

janders99
Posts: 11
Joined: 10 October 2013
Year and Model: 2008 XC70
Location: North Carolina, USA

Post by janders99 »

Success!! About 3 hours. Clearances for getting tools onto nuts by far was the biggest time issue. A couple of points for anyone else with my type of car ('01 C70 - part of this forum because it is so similar to other older cars listed here) (1) the shield inside the passenger wheel well does not have a crease nor can it be folded back flat against itself inside the well as so many of the videos show; I used a piece of 1x6 wood to wedge the folded shield out of the way as much as possible. However, with this thing in the way, getting a wrench on the right hand 17mm bolt is still tedious. I used both a socket and an open wrench (I did not have a shallow socket, only deep ones, which created a further problem). (2) try to place the jacking point for the engine oil pan as closely "in line" with the engine mount as possible; when I first raised mine, it twisted enough so that the 17mms would not go back in. I loosened the 14mms (2 in center top of the mount) after repositioning the jack to raise the engine straight up. Only then could I get

janders99
Posts: 11
Joined: 10 October 2013
Year and Model: 2008 XC70
Location: North Carolina, USA

Post by janders99 »

sorry for split posts...
Only after loosening the 2 14mms and re-raising the engine straighter upward could I get the two 17mms into their threads. This complication took about an hour of the three I had into the project.

This was the most rewarding auto repair project I've ever done in terms of immediate improvement even my wife noticed. Below is a picture of the old disintegrated mount. Thanks again to very helpful MVS Forum posters.
Attachments
NO WONDER it rattled... !
NO WONDER it rattled... !
Old 215K side engine mount.jpg (90.79 KiB) Viewed 696 times

janders99
Posts: 11
Joined: 10 October 2013
Year and Model: 2008 XC70
Location: North Carolina, USA

Post by janders99 »

OK a few 1000 miles down the road and it is now time to replace the front and rear hydraulic mounts (cone shaped oil filled parts that are called "pads" in Volvo parlance). The front one is located on the front subframe cross member and two different diagrams place the rear one on the opposite or aft cross member but *I cannot find the rear hydraulic mount.* I did find out that my 2001 Volvo C70 is a 2.3 *not a 2.4* liter :oops: and maybe that makes a difference. My wife volunteered that "maybe it's missing on your car" (it's only "my" car when having these kinds of discussions...) but I cannot see that the engine/transmission complex gets even close to the aft subframe cross member to even provide a place to beneficially balance or cushion anything there... What are the chances that my 2.3 liter car only has the one front hydraulic mount -- in addition to the usual compliment of other mounts: side, transmission torque and top mount...??

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
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Post by jblackburn »

That mount you're looking for was right under the turbocharger on my 1998, but I think it moved slightly to the side for 1999+ model years.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

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